minor river in boreal forest

small river swampy bank boreal forests taiga zone northeast europe common birch betula verrucosa beaver mink habitat fall time autumn leaf forest woodland community xylium mixed coniferous floodplain bottomland holm flood plain overflow land bottomed holmme alluvial forestry wood management woods slow current stagnant water peat bogs swampiness bogginess formation quantity paludification winter runoff low season lowflow period